Downgrading Cisco PIX

Unanswered Question
Mar 15th, 2008

Hi All,

i was reading the config guide for the Cisco PIX Version 6.3 IOS, i noticed there is no clear procedure for downgrading the cisco pix from this version to version 6.0.

there is a procedure for downgrading to version 4 and 5.

here is what in the config PDF: "To downgrade to an earlier version, enter the following command:

flash downgrade version

Replace version with one of the following values:

•4.2

•5.0

•5.1

You do not need to use the flash downgrade command when downgrading to Versions 5.2 or 5.3 from Version 6.1."

please how can i go with the downgrade to version 6.0. i need this procedure if the version 6.3 fails?!!!

regards,

Ala

I have this problem too.
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jojuarez Sat, 03/15/2008 - 19:25

Hi Ala,

You can just use the "copy tftp flash" command and just upload the old image. You can refer to the following link:

http://cco.cisco.com/univercd/cc/td/doc/product/iaabu/pix/pix_61/relnotes/61dwngrd.htm

Although I do not know why would someone want to go to versions earlier than 6.3.5 as they're no longer supported.

In the odd case that you encounter any problem w/ 6.3.5 (which, btw, is GD), you may go for an interim release but not to downgrade. v6.3.5 has several fixes for bugs in earlier deployments.

Amahameed Sat, 03/15/2008 - 23:06

Hi jojuarez,

Actually, just to know, and as a pre-caution.

thanks for help.

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